Need A TH400 Speedo Gear - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cwilkie · 04-20-2005, 05:00 PM

I need a TH400 speedo gear for a rear end ratio of 3.07. Anyone have one?

Chance

*Gee_Emm* · 04-20-2005, 06:13 PM

This might help

http://www.tciauto.com/tech_info/speedo_gears.htm#400

skokie · 04-20-2005, 07:33 PM

Quote:

Originally Posted by cwilkie

I need a TH400 speedo gear for a rear end ratio of 3.07. Anyone have one?

Chance

Something else to take into considertion is that the tire height plays into the gear size.

cwilkie · 04-20-2005, 08:38 PM

Here's what my truck consists of...396BB, TH400 transmission, 3.07 rear end ratio, with 16x8 wheels. Help is greatly appreciated because I plan on driving my truck a lot.

Chance

68w/sbc406 · 04-20-2005, 08:52 PM

what size tire do you have?

skokie · 04-20-2005, 09:25 PM

Get your tire diameter and use this link http://www.bgsoflex.com/speedo1.html

*Gee_Emm* · 04-20-2005, 10:03 PM

http://www.sccoa.com/faq/speedgr.html

04-20-2005, 05:00 PM	#1
cwilkie Chance Join Date: Sep 2001 Location: Belcourt ,ND, USA Posts: 750	Need A TH400 Speedo Gear I need a TH400 speedo gear for a rear end ratio of 3.07. Anyone have one? Chance __________________ 1968 Chevrolet Stepside BB 396 w/TH400 1972 Chevrolet 3/4 Ton 4x4 BB 496 w/TH400

04-20-2005, 08:52 PM	#5
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	what size tire do you have? __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

04-20-2005, 09:25 PM	#6
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,334	Get your tire diameter and use this link http://www.bgsoflex.com/speedo1.html __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

04-20-2005, 06:13 PM	#2
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	This might help http://www.tciauto.com/tech_info/speedo_gears.htm#400

04-20-2005, 08:38 PM	#4
cwilkie Chance Join Date: Sep 2001 Location: Belcourt ,ND, USA Posts: 750	Here's the run down. Here's what my truck consists of...396BB, TH400 transmission, 3.07 rear end ratio, with 16x8 wheels. Help is greatly appreciated because I plan on driving my truck a lot. Chance __________________ 1968 Chevrolet Stepside BB 396 w/TH400 1972 Chevrolet 3/4 Ton 4x4 BB 496 w/TH400

04-20-2005, 10:03 PM	#7
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 4,002	http://www.sccoa.com/faq/speedgr.html



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